diff --git a/source/_includes/asides/developers_navigation.html b/source/_includes/asides/developers_navigation.html
index 080320a114..c5c8089f31 100644
--- a/source/_includes/asides/developers_navigation.html
+++ b/source/_includes/asides/developers_navigation.html
@@ -19,6 +19,7 @@
           <li>{% active_link /developers/development_checklist/ Checklist %}</li>
           <li>{% active_link /developers/development_testing/ Testing %}</li>
           <li>{% active_link /developers/development_catching_up/ Catching up with Reality %}</li>
+          <li>{% active_link /developers/development_validation/ Validation %}</li>
         </ul>
       </li>
       <li>